RadPanelBar provides a flexible client-side API - you can easily interact with the panelbar in the browser using the panelbar client-side object.

1. Getting the RadPanelBar client-side object: RadPanelbar creates a client-side object with the ClientID of the panelbar. You can obtain the reference using the following javascript code:

   var panelbar = <%= RadPanelbar1.ClientID %>;
   		

2. Once you get the client-side object of RadPanelbar, you can use the FindItemByText methods to get the instance of a particular item. Example:

   var panelbar = <%= RadPanelbar.ClientID %>;
   var text =   document.getElementById("openTextBox").value;
   var item = panelbar.FindItemByText(text);
   

3. When you get the instance of a particular item, you can call the Disable() / Enable() / Expand() / Collapse() / etc. methods: